The invention generally relates to polymer films used as protective cover
sheets for polarizer plates, a method for producing polarizing plates,
and a Liquid Crystal Display employing the same. More particularly, the
invention relates to a cover sheet composite having a removable, carrier
substrate and a cover sheet comprising a low birefringence polymer film
and a layer that promotes adhesion to polyvinyl alcohol on the same side
of the carrier substrate as the low birefringence polymer film. The
guarded cover sheet of the invention is less susceptible to defects due
to dirt and abrasion during the manufacture of the cover sheet and
polarizer plates. In addition, the cover sheet has excellent adhesion to
polyvinyl alcohol-containing dichroic films and eliminates the need to
alkali treat the cover sheet prior to lamination to the dichroic films.